S-91525A327 0.406" ID x 0.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel construction, ideal for harsh chemical and marine environments
• Precise dimensional fit with 0.406" ID specifically engineered for reliable 3/8" screw applications
• Enhanced load distribution through 0.75" OD design, reducing surface pressure and preventing material damage
• Consistent performance maintained by Rockwell B68 hardness, ensuring shape retention under heavy loads
• Robust thickness tolerance (0.110-0.140") providing reliable spacing and vibration resistance in assembly
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries
• Long-term durability in demanding applications thanks to premium stainless steel material grade

Professional Applications & Engineering Value

These 316 stainless steel flat washers deliver critical engineering value in applications where corrosion resistance and chemical stability are paramount. The marine-grade 316 stainless steel composition provides exceptional protection against chloride-induced stress corrosion cracking, making these industrial washers ideal for offshore equipment, chemical processing plants, and coastal infrastructure. The precise 0.406" ID ensures perfect alignment with 3/8" screws, preventing installation issues while the generous 0.75" OD distributes clamping forces effectively across softer materials. Engineered with Rockwell B68 hardness, these heavy-duty flat washers maintain dimensional stability under sustained pressure, solving common failure points in vibrating machinery and structural assemblies where standard washers might deform or corrode prematurely.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with 0.406" inner diameter, 0.75" outer diameter, and 0.110-0.140" thickness range for consistent performance. These inch system washers comply with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards regarding substance restrictions, ensuring environmental and workplace safety compliance. The 316 stainless steel material provides superior corrosion resistance compared to standard 304 grade, while the Rockwell B68 hardness specification guarantees mechanical integrity in demanding applications.